High-Performance Concrete Construction-Burj Khalifa—A New High for High-Performance SCC (Recorded presentation)

Burj Khalifa—A New High for High-Performance SCC (Recorded presentation)

Video Transcription

Video Summary

Dr. James Aldred, introduced as an expert with substantial international experience and notable accolades, shares insights on the innovative construction techniques employed in building the Burj Khalifa, notably the use of self-consolidating concrete (SCC). Despite common knowledge surrounding the tower's height and design, Dr. Aldred emphasizes SCC's vital role. Challenges faced, such as the need to manage pumping concrete at great heights, are detailed, focusing on technical adjustments like optimizing aggregate sizes to reduce friction during pumping. He draws parallels between the advancements in skyscraper technology and the automotive industry, suggesting that pushing technological boundaries fosters significant material and procedural innovations. Furthermore, contrasting past predictions with recent trends, he highlights the shift from steel office towers in North America to mixed-use concrete skyscrapers in Asia and the Middle East. The discussion concludes with practical considerations and lessons learned regarding construction and concrete handling processes in extreme conditions.

Keywords

Burj Khalifa

self-consolidating concrete

construction techniques

skyscraper technology

concrete pumping

material innovations